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2 Sheets-Sheet 1.

Patented May 5,1891.

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(No Model.)

G H WEBB MACHINE PGR HEADING BoLTs.

WI TN ESSEE.

(No Model.) 2 Sheets-Sheet 2.

G. H. WEBB.

MACHINE POR HEADING BOLTS.

No. 451,604. Patented May 5, v1891.

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AUNITED STATES PATnNT OFFICE.

GEORGE II. IVEBB, OF PAVTUOKET, RHODE ISLAND.

MACHINE FOR HEADING BOLTS.

SPECIFICATION forming part of Letters Patent No. 451,604, dated May 5,891.

Application filed March 27, 1890.

To (all whom, it' may concern.-

Be it known that I, GEORGE H. W'EBB, of the city of Pawtucket, in thecounty of Providence, n the State of Rhode Island, haveinvented acertain new and useful Improvement in Machines for Heading Bolts; andIdeclare the following to be a specification thereof, reference being hadto the accompanying drawings.

Like letters indicate like parts.

Figures l and 2 are respectively a front and side elevation of the waterbox and drip, which constitute the main feature of my improvement. Fig.3 is a front elevation of the cross-head of a bolt-heading machine withmy improved water-box and drip in position. Fig. 4 is a vertical sectionon line XX of Fig. 3, the hammers and levers being in side elevation.Figs. 5 andGare detail views. Figs. 7, 8, and 9 show modified forms ofmy invention.

My invention relates to machines for heading bolts by hot forging;7 andis designed to protect the hammer-slides from water and grit. Theheading of the boltis accomplished by an upsetting-die, which strikesthe inserted end of the bolt-blank, and by forging dies or hammers,which shape the sides of the bolt-head. These latterhammers are mountedon slides, which work in grooves or guides in the arms of the cross-headof the machine. The bolt-blank is highly heated, in order to be properlyforged, and the dies or hammers which operate upon lit would be injuriously heated were it not that jets of water are discharged upon them.As the heated boltblanks are struck. repeatedly by the hammers scales ofthe iron fall off, as is common in forging, and these scales mingledwith the water will work their way, unless prevented, into the groovesor guides wherein the slides travel and will soon wear away both theslides and grooves by friction. f

My invention consists in providing the usual tubular guard, whichsurrounds the central or upsetting hammer, 'with a box-like extension infront, which has a convex water-drip at the bottom, extending laterallybeyond the box portion, and also aconvex trough secured upon the upperend of the lower slide, which trough is so located as to take thedischarge serai No. 345,575. (No man of said drip and in turn todischarge upon the sloping surfaces cut in the cross-head or into arecess in the cross-head, as hereinafter more fully specified.

Referring to the drawings, A represents the cross-head of a bolt-headingmachine. The arms are grooved to allow a reciprocating movement of theslides B therein. These slides B are operated by the levers C. On eachslide B is a hammering-die D, adjustably secured to the slide by thescrew-bolt c. A screw-threaded rod a, engaging in a screwthreaded boss bof the slide B, is so adjusted that its inner end bears against theonterend of the die D.

E is the upsetting die or hammer, which has a reciprocating movement ina direction at a right angle to the cross-head. The plunger of the die Eis cutaway on its under surface, as seen at (l, so as to leave awater-drip at e..

Instead of the tubular guard usually surrounding the die E, I make aguard of peculiar construction. rllhe rear portion m is tubular. Thefront extension n has three plane rectangular sides, which give it abox-like appearance, while the lower portion of this extension has aconvex water-way or drip-box 0 projecting downward below the undersurface of the tubular part m and provided in front and rear with lips pp, the former extending downward to form a iiange 0". The lower insidesurface of thetubular part m has aslight downward inclination toward thefront to facilitate the flow of the water and the dripbox o is open atits lateral ends, as seen in Figs. l and 2. The cross-head A is cut awayfor the reception of this guard and drip-box and also to form convexsurfaces s, terminating on each side with projecting drippingpoints t,which discharge the water clear of the machine.

On the top of the rlower slide B, which is shaped convex on its upperedge, I place a trough Gr, longitudinally convex, (seen in front andside elevation in Figs. 5 and (3,) having lips u, u and ears '21, by thelatter of which it is fastened to the slide B. This trough G, I do notclaim as my invention, the same being shown in the pending applicationfor Letters Patent filed by Benjamin S. Meader, Serial No. latl. Whenthe water has been discharged oii the hammers D E to pijevent theiroverheating, as already described, all the spray and spatters, as wellas the scales of iron struck off by the operation of forging, collect insaid central guard m ln. The flow passes into the drip-box o,thencethrough the trough G, thence upon the sloping surfaces s of thecross-head, and falls to the ground from the drip-points i. By examiningFig. l it will be seen that the trough G is wider than the drip-box o,and therefore must conduct all its discharge away. The central gua-rdhas on the rear of its tubular portion m a concentric ring or circularlip The Water falling from the plunger E drops from the point e insidethe lip of said central guard. The length of the tubular portion m ofthe cential guard should be equal to the thickness of the cross-head A,as illustrated in Fig. et, and the box portion n extends from the frontof said cross-head into the open space left by the four slides E, asshown.

In Figs. 7, 8, and 9 I show at G a guardplate, which is a modificationof the trough G. It has the same longitudinal curve, a front lip tu, andear-pieces; but its rear lip z/ is turned downward and the bottoni incrosssectiou is slightly inclined sufficiently to conduct the water tothe ieai, where the lip y enters a recess II in the cross-head, whencethe water tiows from the machine to either side.

I claim as a novel and useful invention and desire to secure by LettersPatentl. In a bolt-heading machine, the combination,with a gioovedcross-head and hammerslides, of the central guard m 11 having a dripboxo, arranged substantially as shown, and for the purpose specified.

In a bolt-heading machine, the combination,with a giooved cross-head andhammerslides, of the central guard m n, having a dripbox o, and theconvex trough G upon the top of the lower slide to receive and cond uctaway the discharge of said drip-box to a recess in the cross-head, alllocated and arranged substantially as and for the purpose specified.

3. In a bolt-heading machine, the grooved cross-head eut away withsloping surfaces s on its lower arm, and an inner recess Il, and thehammer-slides, in combination with the central guard m n, having thedrip-box o, and the convex trough G upon the top of the lower slide,substantially as described.

It. The combination of the cross-head A, having a central aperture, theplunger and die E, reciprocating in said opening and provided With adripping-edge e, and the central guard m n, having t-lie concentric rearlip ff: and the drip-box o, substantially as speciiied.

5. The combination of the grooved crosslicad having the recess H, thehammer-slides, the central guard m n, having the drip-box o, and theguard-plat-e G', having the lip yw bent up in front and the rear lip fl/ bent down, said plate G being fastened on the top edge of the lowerslide B and adapted to discharge the drip of the box o into the recessII', substantially as shown.

6. The combination of the grooved and reccssed cross-head A, thebackwardly-inclined guard-plate G, having the lips w y, and the slide B,to which said plate is fastened, substantially as specified.

7. In a bolt-heading macliiue, an upsetting die and plunger E, having aninclined cut il ou its under surface to form awater-drippiiig edge e, incombination with the cross-head A, having a central opening, andatubular guard inserted in said opening, and which is located andarranged so as to receive and conduct away the drppings from said edgee, substantially as shown.

GEORGE ll. WEBB.

Witnesses:

WARREN R. IERCE, DANIEL W. FINE.

